Liu Yangjie, Ang L K
Computational Nano-Electronics Laboratory, Division of Micro-Electronics, School of Electrical and Electronic Engineering, 50 Nanyang Avenue, Nanyang Technological University, Singapore 639798.
Sci Rep. 2013 Oct 29;3:3065. doi: 10.1038/srep03065.
In Čerenkov radiation and transition radiation, evanescent wave from motion of charged particles transfers into radiation coherently. However, such dissipative motion-induced radiations require particles to move faster than light in medium or to encounter velocity transition to pump energy. Inspired by a method to detect cloak by observing radiation of a fast-moving electron bunch going through it by Zhang et al., we study the generation of electron-induced radiation from electrons' interaction with Maxwell's fish-eye sphere. Our calculation shows that the radiation is due to a combination of Čerenkov radiation and transition radiation, which may pave the way to investigate new schemes of transferring evanescent wave to radiation.
在切伦科夫辐射和渡越辐射中，带电粒子运动产生的倏逝波会相干地转化为辐射。然而，这种耗散性的运动诱导辐射要求粒子在介质中的运动速度超过光速，或者经历速度跃迁以获取能量。受张等人通过观察快速移动的电子束穿过隐身衣时的辐射来检测隐身衣方法的启发，我们研究了电子与麦克斯韦鱼眼球相互作用产生的电子诱导辐射。我们的计算表明，这种辐射是切伦科夫辐射和渡越辐射共同作用的结果，这可能为研究将倏逝波转化为辐射的新方案铺平道路。
